Introduction of some information about the DNS server.

This patch touches #57.

cc @dnmTX @mitchellkrogza @smed79

README.md

@@ -1,4 +1,9 @@
-# Ultimate Hosts Blacklist dev-center
+# Ultimate Hosts Blacklist - dev-center
+
+## DNS Server
+
+For everything regarding the DNS server, please move into the `dns` folder.
+
 
 ## Comparison system
 

dns/README.md

@@ -0,0 +1,60 @@
+# DNS
+
+The Ultimate Hosts Blacklist project offers 2 DNS server that are updated
+daily. They are free to use and can be used instead of the other list we offer.
+
+Both DNS servers are location in Germany. They are configurated to answer DNS
+queries with the [bind](https://www.isc.org/bind/) DNS implementation software.
+
+Our project follows a Zero-Logging policy. Meaning that we don't store any
+information about your queries nor their answers.
+
+### Location
+
+Our servers are reachable
+
+| DNS Name | safedns.allover.co.za   | safedns2.allover.co.za  |
+| -------- | ----------------------- | ----------------------- |
+| IPv4     | `88.198.70.38`          | `88.198.70.39`          |
+| IPv6     | `2a01:4f8:140:5021::38` | `2a01:4f8:140:5021::39` |
+
+### Testing
+
+After each successful launch of our self-crafted software, the
+`xxx.allover.co.za` domain is added into one of the generated RPZ zones.
+
+Therefore, one can test through the following - or their equivalent for your
+system or distribution.
+
+IPv4:
+
+```shell
+$ dig +short -t A xxx.allover.co.za @safedns.allover.co.za
+0.0.0.0
+$ dig +short -t A xxx.allover.co.za @safedns2.allover.co.za
+0.0.0.0
+```
+
+IPv6:
+
+```shell
+$ dig +short -t AAAA xxx.allover.co.za @safedns.allover.co.za
+::
+$ dig +short -t AAAA xxx.allover.co.za @safedns2.allover.co.za
+::
+```
+
+### Configuration
+
+Our servers are configured as masters. There is no Master/Slave constellation.
+
+A self-crafted software that merges all data from and create the RPZ zones out
+of them is automatically running every night or on-demand.
+
+Our logging configuration is the following:
+
+```
+logging {
+    category default { null; };
+};
+```